This game is actually crucial to both team, for Barcelona they need to win this game to help them get back their winning psychology as they have not been doing so well in the last two games and for betis they will need it so they can probably have a chance to climb up the table and it will be on the record they won such a big team this season but in reality they don't look like they are going to win Barcelona is something betis may not be able to achieve even if they try and they aren't the favorite for many others out there so I'm very certain about the fact that Barcelona will literally fight hard to make sure they don't loose this game.
I don't think Betis can get something in this game, Barcelona knows what is at stake after Madrid lost to Bilbao, this can be the opportunity they have been waiting for since Madrid still have a game at hand, winning this game will give them some breathing space even if Madrid are playing tonight is best to win against Betis then wait for the champions to make another mistake. Leading by a goal to nil at halftime shows Barcelona are in full control over Betis but anything can happen, meaning that Betis can come with a surprise and get a goal and that's what Barcelona don't need, to share ir lose all 3pt.